Find a Top Family Doctor Near Me in Washington, DC – Book an Appointment Instantly

Colleen Abell is a board-certified Family Nurse Practitioner. She graduated with a Master of Science in Nursing from Georgetown University in 2006. She has practiced as a nurse practitioner for the past sixteen years. Ms. Abell's experience includes working in a family medical clinic, but she spent most of her career providing care for patients recovering from Bariatric and GI surgical/oncology procedures. Prior to becoming a nurse practitioner, Ms. Abell worked as a Registered Nurse in cardiology and emergency medicine.

Colleen joined the Gastro Center of Maryland in 2021 after relocating from the NY/NJ area. She is dedicated to being a great provider and advocate for her patients. Outside of work, Ms. Abell enjoys spending time with her husband and three boys.

Xinna Yi is a board-certified Family Nurse Practitioner with a Master of Science in Nursing from Wilkes University, which she completed in 2023. She brings a wealth of experience from her work in a family medical clinic and her previous role as a Registered Nurse specializing in cardiology medicine. Before transitioning to nursing, she graduated from medical school in China and gained one and a half years of experience as a gastrointestinal physician at an academic hospital in China.

 Xinna is committed to patient-centered care, employing a collaborative, team-based approach to healthcare. She has a passion for continuous learning and teaching. In her personal life, she enjoys spending time with her family, reading, watching movies, and traveling.

Abbi Lamparelli is a Nurse Practitioner with Gastro Centers of Maryland, bringing over a decade of hands-on clinical experience to her role. She began her career in medical-surgical and emergency medicine and transitioned into advanced practice nursing in 2023 after completing her training at Drexel University. She further advanced her education by earning a Doctor of Nursing Practice from Aspen University.

Abbi’s approach to patient care is deeply rooted in compassion and respect. She emphasizes a patient-centered, holistic, and evidence-based philosophy—ensuring that each individual receives personalized care tailored to their unique health journey. She remains committed to empowering patients with clear communication, shared decision-making, and attentive follow-up.

Beyond her clinical work, Abbi has a strong interest in healthcare research and ongoing professional development. Outside of work, Abbi enjoys reading, birdwatching, and trying new restaurants—interests that highlight her curiosity and appreciation for both quiet moments and fun new experiences.

Catherine Holder, PA-C, is a physician assistant with more than 10 years of experience. At Fairfax Colon & Rectal Surgery, PC. Catherine specializes in diagnosing and treating anal pain, hemorrhoids, abscesses, and other colorectal conditions.

Catherine completed her undergraduate and physician assistant training at Marquette University in Milwaukee, Wisconsin, before returning to her home state of Alaska to specialize in colon and rectal surgery. During the early years of her career, Catherine met her husband, an Air Force pilot, and relocated to Washington state, where she continued to specialize in surgery.

After welcoming their third child, Catherine and her husband were stationed in Illinois. Catherine transitioned into being a stay-at-home parent during this time before having her third child and moving to Northern Virginia. She is thrilled to rejoin the workforce and return to her passion of helping others at Fairfax Colon & Rectal Surgery, PC.

With extensive education, training, and a compassionate demeanor, Catherine hopes to help her patients feel empowered to face their medical and surgical concerns.

• PA, Marquette University, 2010
• B.S. Biomedical Sciences, Marquette University, 2009

Alexandra Minutillo, PA-C, is a physician assistant at Fairfax Colon & Rectal Surgery, PC. She earned her Bachelor of Arts in Chemistry with a minor in Creative Writing from Washington & Lee University and her Master of Physician Assistant Studies from Chatham University in Pittsburgh, Pennsylvania.

Alexandra began her career at Fairfax Colon & Rectal Surgery in September 2024, where she specializes in the diagnosis and treatment of hemorrhoids, pilonidal cysts, anal pain, abscesses, pruritus, and other colorectal conditions. She was drawn to colorectal surgery during her PA school training, where she developed a strong interest in both the clinical and procedural aspects of the field.

She values building trust with her patients and takes pride in guiding them through sensitive concerns with compassion and clarity. In her spare time, she enjoys exploring Washington, D.C., and spending time with her family and friends.

• Master of Physician Assistant Studies, Chatham University, 2024
• B.A. Chemistry & Creative Writing, Washington & Lee University, 2022

TriiBE Medical LLC provides an extensive array of high-quality health care services for patients of all ages in the Upper Marlboro, Maryland area. Uloma Ibe, MD believes that a personal approach is always the best way to deliver quality health care, so they get to know each person and their specific health needs and goals. 

The TRiiBE Medical LLC specialists educate, support, and guide their patients, helping every person find the ideal personalized treatment approach for all their medical concerns. 

The medical providers at TRiiBE Medical LLC are always ready to help with acute care issues like colds, flu, and injuries. They’re also strongly focused on chronic disease management, preventive care, and helping their patients to meet long-term health goals. 

TRiiBE Medical LLC offers testing, diagnosis, and treatment in one location because they understand time is a valuable resource. Telemedicine appointments are also available, and patients receive the same exemplary care with each option. The dedicated providers invite patients to call the office or schedule an appointment online today.

PRIMARY & ALTERNATIVE MEDICAL CENTER

Is Truly Patient Centered.

You are the reason we are here. Our goal is to help you feel better mentally, physically and spiritually. Our primary tools are listening to you sensitively, examining you carefully and then discussing with you thoroughly, our opinions and your options. We see health care as both a science and an art. There is rarely one right answer, and one size almost never fits all. When it comes to your health we will incorporate highly accurate diagnostic laboratories and advance imaging studies with our medical expertise. We will derive diagnoses and treat appropriately as well as make a referral to our affiliated specialist. We will be attentive to your specific needs, concerns and fears. We see you each as special individuals and not merely as people with high blood pressure, diabetes, depression, obesity or high cholesterol. We see ourselves as your primary care providers, health care advisers, educators, and teammates. Patients that take an active role in their health care generally do better.

Learn More